Ein Blick ins LichtDavid S. Falk, Dieter R. Brill, David G. Stork, Anita Ehlers, Rudolf Kippenhahn · First published 1990Open the Tome
Brazil's economic and political futureJulian M. Chacel, Pamela S. Falk, David V. Fleischer · First published 1988Open the Tome
Seeing the lightDavid S. Falk, David R. Falk, Dieter R. Brill, David G. Stork · First published 1986Open the Tome
The Global predicamentDavid W. Orr, Soroos, Marvin S., Falk, Richard A. · First published 1979Open the Tome
